I don't know if it's worth mentioning but you get a good 20-30% speed increase going to a 64bit host/build of SIMH, and a few more points beyond that for rebuilding most of SIMH with -O2 ... I found a couple things that broke in -O2 that work in -O1... it should have been in the simh list. On Sun, Nov 28, 2010 at 5:57 PM, Sampsa Laine <sampsa at mac.com> wrote: Well, I'm not planning on doing anything particularly serious on it, just thought a "VAX" laptop that boots into CDE would be fun to have.. Sampsa On 28 Nov 2010, at 22:52, hvlems at zonnet.nl wrote: A 90A runs at 83 MHz and is rated at 40~42 VUPS. The 90 is somewhat slower. A laptop is also slower than a pc, its cpu runs at two thirds the clockspeed of a desktop. And when its cpu is utilized at 100% (as simh does) then the box heats up considerably. For sustained use a laptop may not be the desired platform. BTW I guess that simh is restricted to run on a single core. You'll probably see 50% cpu utilization for the simh process. A faster single core might improve things. Verzonden vanaf mijn draadloze BlackBerry -toestel From: Sampsa Laine <sampsa at mac.com> Sender: owner-hecnet at Update.UU.SE Date: Sun, 28 Nov 2010 22:16:15 +0000 To: <hecnet at Update.UU.SE> ReplyTo: hecnet at Update.UU.SE Subject: Re: [HECnet] SIMH VAX memory weirdness Sure - but I thought a VAXstation 4000/90 got like 40ish VUPS, whilst my relatively recent Core 2 Duo + SIMH only get about 14? I wonder how much faster say CHARON VAX would be, I gather it's quite thoroughly optimised? Sampsa On 28 Nov 2010, at 22:13, hvlems at zonnet.nl wrote: When you run the PDP-11 simulator on a fast host then it willl blow the socks off any hardware PDP-11. The same applies for the VAX of course. Even with the burden of a host OS a 3 GHz Pentium has excess power to simulate a VAX whose own cpus's ran well below 200 MHz. And simh wasn't even optimized because it runs on a multitude of hosts. Verzonden vanaf mijn draadloze BlackBerry -toestel From: Sampsa Laine <sampsa at mac.com> Sender: owner-hecnet at Update.UU.SE Date: Sun, 28 Nov 2010 21:14:33 +0000 To: <hecnet at Update.UU.SE> ReplyTo: hecnet at Update.UU.SE Subject: Re: [HECnet] SIMH VAX memory weirdness Dell Latitude E6500 (it's a Core 2 Duo at 2.5 GHz I think), running Ubuntu Desktop, Oracle VirtualBox and Ubuntu Server inside the VM, then I run SIMH inside the Ubuntu server - this way the main host OS and the SIMH install can talk to each other over the network. I get about 7 VUPS on my Mac Mini (a 1.66 GHz Core Duo), so the 14 VUPS is about right, a 2.5 GHz Core 2 is about twice as fast as a 1.6 GHz Core... Sampsa On 28 Nov 2010, at 21:05, Steve Davidson wrote: Sampsa, What kind of a laptop and what OS are you running? The 3900 series systems ran about 38 VUPs and the 780 ran at 1 VUP... -Steve From: owner-hecnet at Update.UU.SE [mailto:owner-hecnet at Update.UU.SE] On Behalf Of Sampsa Laine Sent: Sunday, November 28, 2010 15:54 To: hecnet at Update.UU.SE Subject: Re: [HECnet] SIMH VAX memory weirdness That worked! Cool, I now have a 14 VUPS laptop with 512 megs of RAM. Just trying to get DECWINDOWS to work, I'm assuming I can get it to display remotely even though it has no graphics hardware built in, right? Sampsa On 28 Nov 2010, at 20:49, H Vlems wrote: The VAX 11/780 may well have been limited to just 32 MB, I can t remember. Try modifying PHYSICAL_PAGES, perhaps the microcode that comes with simh was modified. Van: owner-hecnet at Update.UU.SE [mailto:owner-hecnet at Update.UU.SE] Namens Sampsa Laine Verzonden: zondag, november 2010 21:46 Aan: hecnet at Update.UU.SE Onderwerp: Re: [HECnet] SIMH VAX memory weirdness Ah, bummer - what about the 11/780? Sampsa On 28 Nov 2010, at 20:44, Steve Davidson wrote: > Sampsa, > > I'm pretty sure that the 3900 series machines only supported 64MB max > and that is what you are emulating. > > -Steve > > > -----Original Message----- > From: owner-hecnet at Update.UU.SE [mailto:owner-hecnet at Update.UU.SE] On > Behalf Of Sampsa Laine > Sent: Sunday, November 28, 2010 15:41 > To: hecnet at Update.UU.SE > Subject: Re: [HECnet] SIMH VAX memory weirdness > > Still only seeing 64 MB in the OS.... > > Sampsa > > > On 28 Nov 2010, at 20:27, Oleg Safiullin wrote: > >> On 29.11.2010 2:20, Sampsa Laine wrote: >>> I just increased the memory on one of my SIMH VAX VM's to 512 MB from > 64 MB - the system boots fine but SHOW MEMORY (under OpenVMS 7.3-1) > still reports 64 MB. >>> >>> Do I need to tell the VMS installation about the new RAM somehow? How > much RAM does 7.3-1 (VAX) support anyway? >>> >>> Sampsa >>> >>> >> >> Try to replace ka655.bin firmware with the following file: >> >> http://pdp-11.org.ru/~form/files/ka655x.bin > Geen virus gevonden in dit bericht. Gecontroleerd door AVG - www.avg.com Versie: 10.0.1170 / Virusdatabase: 426/3285 - datum van uitgifte: 11/28/10